C++生成Beta分布随机数

 

#include "cpp3rdlib/boost/include/boost/math/distributions.hpp"
#include "cpp3rdlib/boost/include/boost/random/mersenne_twister.hpp"

float rand_beta_dist(float alpha, float beta) {
　　static thread_local boost::random::mt19937 seed(std::time(0));

　　std::uniform_real_distribution<float> uniform_dist(0.0, 1.0);
　　auto rand_uniform = uniform_dist(seed);

　　boost::math::beta_distribution<> beta_dist(alpha, beta);
　　auto rand_beta = boost::math::quantile(beta_dist, rand_uniform);

　　return rand_beta;
}